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What is the meaning of CH2. Phrases containing CH2
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CH2
CH2
An unsymmetrical, divalent, hydrocarbon radical, C2H4 metameric with ethylene but written thus, CH3.CH to distinguish it from the symmetrical ethylene, CH2.CH2. Its compounds are derived from aldehyde. Formerly called also ethidene.
A white, crystalline substance, CH2(CO.NH)2.CO, derived from alloxantin, also from malonic acid and urea, and regarded as a substituted urea.
CH2
a.
Pertaining to, or designating, an acid produced artifically as a white crystalline substance, CH2.(CO2H)2, and so called because obtained by the oxidation of malic acid.
n.
A univalent hydrocarbon radical of the ethylene series, CH2:CH; -- called also vinyl. See Vinyl.
a.
Of, pertaining to, or designating, a sulphonic (thionic) acid derivative of methane, obtained as a stable white crystalline substance, CH2.(SO3H)2, which forms well defined salts.
n.
The unsymmetrical hypothetical hydrocarbon radical, CH3.CH2.CH, analogous to ethylidene, and regarded as the type of certain derivatives of propane; -- called also propylidene.
a.
Pertaining to, or designating, an acid, CH2O2(CO2H)2, obtained from amido malonic acid.
n.
A compound radical, C6H5.CH2, related to toluene and benzoic acid; -- commonly used adjectively.
n.
A hydrocarbon radical, C6H4.(CH2)2, regarded as characteristic of certain toluene derivatives.
n.
A hydrocarbon radical, CH2.(CO)2, from malonic acid.
n.
A hydrocarbon radical, CH2, not known in the free state, but regarded as an essential residue and component of certain derivatives of methane; as, methylene bromide, CH2Br2; -- formerly called also methene.
n.
Any one of three metameric radicals, CH2.C6H4.CH2, derived respectively from the three xylenes. Often used adjectively; as, xylylene alcohol.
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